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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Supplemental Cash Flow Information [Abstract] |  |  |
Current assets | $ (5) | $ (47) | $ 13
Other assets | 15 | 43 | 29
Current liabilities | (82) | (38) | 59
Long-term liabilities and equity | (17) | 87 | 43
Other items, net | (89) | 45 | 144
Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract] |  |  |
Interest, net of amounts capitalized | 235 | 239 | 263
Income Taxes Paid, Net [Abstract] |  |  |
Income taxes | 217 | 202 | 97
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] |  |  |
Outstanding trade payables related to capital expenditures | 22 | 18 | 27
(Gain) loss from equity investments | $ (10) | $ (17) | $ (14)

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